"Shinoburu Ninja School" is a place where young people who aspire to become ninja gather. Momoka entered the school, yearning to become a cool ninja who helps people with swords and ninjutsu. However, in addition to those classes, the school also teaches erotic skills to help them become true kunoichi. That may just be too stimulating for Momoka, who is inexperienced in sexual matters.
Will she and her fellow ninja trainees make it through the obscene class and become the cool kunoichi she aimed to be? Or will she become that other kind of female ninja?